<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="UTF-8">
    <title>首页</title>
</head>
<body>
    <img alt="出错了" src="1.jpg" width="200px" height="200px">
    <img alt="出错了" src="2.jpg" width="200px" height="200px">
    <img alt="出错了" src="3.jpg" width="200px" height="200px">
    <img alt="出错了" src="1.jpg" width="200px" height="200px">
    <img alt="出错了" src="2.jpg" width="200px" height="200px">
</body>
<script>
    window.onload=function a(){
        alert(666);
    }
</script>
</html>